Improvement in fog-alarms



s. c. BEDELL a T. cHAnwlcK.

Fog-Alarma,

910.149.709. l v v Patented April14,1874-.

- UNITED STATES PATENT EEICE. a

sILvANus QEEDELL AND TAEER oEADwroK, or RED BANK, NEW JEEsEY.

.IMPROVEMENT IN FOG-ALARNIS.

Specification forming part of Letters Patent No. 149,709', dated Ap'ril 14, 1874; application filed January 5, 1874.

To all whom it may concern: Be it known that we, SILvANUs C. BEDELL and TABER CHADwIoK, of Red Bank,in the county of Monmouth and State of New Jersey, have invented a new and useful Improvement in Fog Alarm, y of which the following is a specification The invention will first be fully described,

l and then pointed out in the claims.

In the accompanying drawing, Figure l is a face view of the alarm movement. Fig. 2 is a section taken on the line m w of Fig. l. Fig. 3 is a view of the middle wheel of the movement detached, in which the pins work, for making lthe variations in the alarm strokes of the bell-hammer.

Similar letters of reference indicate corresponding parts.

v'This alarm consists of a suitably constructed frame, A, which supports an alarm movement, consisting of wheels and pinions, which are set in motion by means of a coil-spring in this example of our invention; but a Aweight may be used in place ofthe spring. One wheel of the movement carries pins, which, in its revolution, strike the handle or rod of the alarm-bell Vhammer and give the alarm. B is the drivingwheel to the shaft C, of which one end of the coil-spring D is attached. The other end of the spring is attached to the connecting-rod E of the frame. This wheel B meshes into the pinion F, which is on the shaft of the middle wheel G. The "wheel G meshes into the pinion H on the shaft of the wheel I, and the wheel I meshes into the pinion J, which is on the shaft of the regular fly K. L L are slots, in the middle wheel G. N N are bars, pivoted to the wheel G, having in each a pin, O O. These pins work in the slots L L as the bars are moved, and project through the wheel, as

' seen in Fig. 2, and as the wheel revolves they strike the end of the hammer-rod I), which causes the hammer to strike the bell Q, and give the alarm. A blow may be given once or twice, as may be desired, for every revolution of the wheel. As seen in the drawing,

the hammer will strike once every revolution as one of the bars N is turned inward, which carries the pin O toward the center and ont of the reach of the hammer-rod, as seen at It. The other bar N is moved outward, which carries the pin O to the outer end of the slot, and

, so that it will strike the hammer-rod, as seen at S. When both pins are thus at the outer ends of the slots, two alarm-blows will be given for each revolution of the wheel. T T are buttons, pivoted to the face of this wheel G, which serve to hold the bar N inl position when the pins are at the ends of the slots,as seen in Fig. 3. When the bars, or either of them, are moved so as to carry the pin to the inner end of the slot, the button isthrown back, as is also seen in Fig. 3. U is the finger-piece,in the frame,.in the inner end of which is a stoppin, V. Then this pin is turned up, as seen in Fig. 2, the :dy K strikes it, and the motion stops. v

This alarm may be made of any required size, and is designed to be carried on vessels which navigate the water, but may be placed on shore.

In da-rk or foggy weather, whether vessel-s are under way or at anchor, the alarm-bell may be struck as frequently as may be deemed necessary. Once in two seconds, or once in four seconds, oroftener, or less frequent, according to construction or proportion of the wheels of the alarm movement.

When a vessel is in motion on the water the alarm should be frequent to insure safety in dark or foggy weather. If the vessel is at anchor the danger is less, and the alarm may be given less frequently; hence the advantage of varying the strokes of the hammer.

X is a box or case, which contains the alarm movement. This movement is wound up with a socket-wrench applied to the driving-shaft C, as seen in Fig. 2.

Having thus described our invention, we claim as new and desire to secure by Letters Patentl. The curved slots L L, in the wheel Gr, forming part of an alarm mechanism, bars N N, pins 0 O, and buttons T T, combined and arranged substantially as and for the purpose described.

2. The finger-piece U with the stop-pin V, in combination with the fly K, for stopping the motion, as shown and described.

SILVANUS (l. BEDELL. TABER GHADWICK.

Vitnesses: A

T. B. MosHEE, ALEX. F. RoEEnTs. 

